Famous deaf mathematicians? There are some really inspiring examples of blind mathematicians. However in my experience I also think problems inside my head using words. So I was wondering if there are some examples of deaf mathematicians who nonetheless where able to make advancements in mathematics. Regards.

Oliver Heaviside, Kathleen Ollerenshaw, Konstantin Tsiolkovsky, Guillaume Amontons. See also this list of deaf scientists by scientific field.